1 /*
2 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
3 * @LastModified: Oct 2017
4 */
5 /*
6 * Licensed to the Apache Software Foundation (ASF) under one or more
7 * contributor license agreements. See the NOTICE file distributed with
8 * this work for additional information regarding copyright ownership.
9 * The ASF licenses this file to You under the Apache License, Version 2.0
10 * (the "License"); you may not use this file except in compliance with
11 * the License. You may obtain a copy of the License at
12 *
13 * http://www.apache.org/licenses/LICENSE-2.0
14 *
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 */
21
22 package com.sun.org.apache.xerces.internal.impl.dtd.models;
23
24 import com.sun.org.apache.xerces.internal.impl.dtd.XMLContentSpec;
25 import com.sun.org.apache.xerces.internal.xni.QName;
26 import java.util.HashMap;
27 import java.util.Map;
28
29 /**
30
31 * DFAContentModel is the derivative of ContentModel that does
32 * all of the non-trivial element content validation. This class does
33 * the conversion from the regular expression to the DFA that
34 * it then uses in its validation algorithm.
35 * <p>
36 * <b>Note:</b> Upstream work insures that this class will never see
37 * a content model with PCDATA in it. Any model with PCDATA is 'mixed'
38 * and is handled via the MixedContentModel class since mixed models
39 * are very constrained in form and easily handled via a special case.
40 * This also makes implementation of this class much easier.
41 *
42 * @xerces.internal
43 *
44 */
45 public class DFAContentModel
46 implements ContentModelValidator {
47
48 //
49 // Constants
50 //
51 // special strings
52
53 /** Epsilon string. */
54 private static String fEpsilonString = "<<CMNODE_EPSILON>>";
55
56 /** End-of-content string. */
57 private static String fEOCString = "<<CMNODE_EOC>>";
58
59 /** initializing static members **/
60 static {
61 fEpsilonString = fEpsilonString.intern();
62 fEOCString = fEOCString.intern();
63 }
|
1 /*
2 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
3 */
4 /*
5 * Licensed to the Apache Software Foundation (ASF) under one or more
6 * contributor license agreements. See the NOTICE file distributed with
7 * this work for additional information regarding copyright ownership.
8 * The ASF licenses this file to You under the Apache License, Version 2.0
9 * (the "License"); you may not use this file except in compliance with
10 * the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 */
20
21 package com.sun.org.apache.xerces.internal.impl.dtd.models;
22
23 import com.sun.org.apache.xerces.internal.impl.dtd.XMLContentSpec;
24 import com.sun.org.apache.xerces.internal.xni.QName;
25 import java.util.HashMap;
26 import java.util.Map;
27
28 /**
29
30 * DFAContentModel is the derivative of ContentModel that does
31 * all of the non-trivial element content validation. This class does
32 * the conversion from the regular expression to the DFA that
33 * it then uses in its validation algorithm.
34 * <p>
35 * <b>Note:</b> Upstream work insures that this class will never see
36 * a content model with PCDATA in it. Any model with PCDATA is 'mixed'
37 * and is handled via the MixedContentModel class since mixed models
38 * are very constrained in form and easily handled via a special case.
39 * This also makes implementation of this class much easier.
40 *
41 * @xerces.internal
42 *
43 * @LastModified: Oct 2017
44 */
45 public class DFAContentModel
46 implements ContentModelValidator {
47
48 //
49 // Constants
50 //
51 // special strings
52
53 /** Epsilon string. */
54 private static String fEpsilonString = "<<CMNODE_EPSILON>>";
55
56 /** End-of-content string. */
57 private static String fEOCString = "<<CMNODE_EOC>>";
58
59 /** initializing static members **/
60 static {
61 fEpsilonString = fEpsilonString.intern();
62 fEOCString = fEOCString.intern();
63 }
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